Complete source of the elements and molecules that are directly used by coralline algae, as well as corals, clams, and other reef-building invertebrates
Provides calcium, strontium, magnesium, and potassium in approximately the same ratios in which they occur in aragonite
Very strong source of carbonates (derived from aragonite), the other important group of ions involved in aragonite formation
Increases alkalinity to help stabilize pH
May be used as an inexpensive alternative to automated calcium reactor systems with similar results. Free of phosphate, silicate, and organic material